Hair brush



FIG. 1 is an isometric view of a hair brush showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a cross-section taken along the line 4-4 of FIG. 3;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a hair brush, as shown. 